05RollaXRS

True. I also experienced the same thing. It was not until the dealership capped it back and I noticed much better low end torque.

arpus 7

Thanks Flowrider for the thread. Very interesting read.

tekjunke

I'd, love to hear what the Gruppe M carbon intake system sounds like... I've only seen it on one car her in the forum. https://www.topendmotorsports.com/le...fiber-6733.php

05RollaXRS

GruppeM is very expensive for an intake. It is all carbon fiber and replaces the OEM sealed airbox. You hear a bit in this video

tekjunke

Thanks! not sure how I missed that <embarrassed>. I get it, its super expensive but damn its sexy and unique!!

05RollaXRS

Yeah, would love the carbon fiber intake with velocity stacks/conical filter, but only GruppeM offers that combination and it is very pricey for what an intake is supposed to be.

05RollaXRS

@flowrider Have you looked at the Boostlogic intakes for the LC500? Never knew the LC500 comes from factory with symmetrical dual intakes. That is why the induction noise is louder in the LC500 than the RCF as it is one and on the passenger side (for the LHD versions).

http://www.boostlogic.com/parts/toyo...ntake-kit.html

flowrider

iTrader: (9)

^^^^I'm aware of that intake., but it is not shielded in any way and, IMHO, would allow for lots of heat soak. As far as intake noise, the LC does not do phony noise like some other cars, but pipes in the sound through a tube to the firewall.





Lou

buister

iTrader: (1)

For a true CAI you have to cut a hole in your wheel well and attach a filter outside the engine bay then run a snorkel up to the engine. Some 1st gen IS300 enthusiasts used to it this way. Being a Lexus, there were not a lot of aftermarket products back then, so guys came up with all kind of ways. I believe that was when FIGS and JoeZ got into making stuff for the Lexus.

05RollaXRS

The RCF has enough channels to pull air in. I believe it is over the top part of front grille and also from the lower part of the grille. The stock filter is a paper filter, which does not allow the best airflow rate especially when compared to velocity stack/conical filter. Also, the stock airbox quite well sealed so it minimizes heat soak. The aftermarket intake elbow provides smoother airflow than the stock intake, which has some resonators to prevent drone while "lugging" the engine. I never lug my engine so it is not an issue for me. The airbox flap does not open up until 3600 rpm so the low end torque should in theory remain the same. Again, the stock airbox is very well designed and optimized so my goal is just to get more induction noise.

Lend0

LMAO what an insane waste of money. I'd rather PPE EL headers that actually do something besides play dress up.

Slash300zx

Am I seeing this right? According to this dyno graph, there might only be around 5 hp gain but you do get almost 10 ft-lbs torque gain, and that's at the wheels, that's not bad!

05RollaXRS

Yeah, not much gain at the top rpm. Only 5 whp peak. After 7100+ rpm, there is no gain at all and the stock intake actually performs better to 7400 rpm rev limiter, but it seems to be gaining around 10 ft-lbs in the midrange between 4000 rpm and 6000 rpm. I am OK with that since it will make the experience more visceral, I hope. Unlike a full exhaust, this is more of a try-it-and-see mod especially considering it costs a much simpler and cheaper mod.

RCF4DAD

Hey Rolla, ordered the Takeda intake from JB Motorsport here in Calgary. Should arrive this week and I'll let you know. Did a practice run on install, pretty easy setup. I don't believe the HP/Torque claims, but it looks nice and hoping for a little more sound.
Takeda brand is good and fit is OEM style, which I liked. Not much out there on reviews or sound bites.

05RollaXRS

Awesome. Great news. I had been looking into JB power as well since they sell it. That is most likely where I would end up getting it from. I agree the sound is the major driving factor here. The installation is very easy, for sure. Just remove the stickers and it will look great with the stock intake manifold. Let me know once you have it installed as to how you like it. I would get it regardless, but would like to hear your thoughts as well.

p.s. We gotta do meet as well sometime before the summer is over LOL